DUNGS ÜB, NB...A2 - Pressure Limiters for gas, air, flue

[{"filename":"ub-nb-a2_datasheet_en_215183.pdf","text":"Pressure limiter for\n multiple actuators\n\n ÜB…A2\n NB…A2\n\n 5.07\n\n\n\n\n Technical description the inlet side via threaded flange.\n The pressure limiters ÜB…A2 and NB… Suitable for gases of families 1,2,3 and\n A2 are compact pressure switches other neutral gaseous media.\n as per EN 1854 for DUNGS multiple\n actuators. Approvals\n The pressure switches are suitable EC type testing certificate as per:\n for switching a circuit on, off or over • EC-Gas Appliances Regulation\n on changes in actual pressure value • EC-Pressure Equipment Directive\n relative to the set reference value. The\n reference valve (switching point) can Approvals in other important gas-\n\n\n\n\n Printed in Germany • Edition 01.18 • Nr. 215 183\n be set easily and quickly by means of consuming countries. Special designs\n a setting wheel provided with a scale for the North American market with UL,\n without the use of a pressure gauge. FM and CSA registrations.\n\n Application\n Pressure switches for DUNGS multiple\n actuators GasMultiBloc and DMV dou-\n ble solenoid valve. Various mounting\n options directly on housing or by means\n of an adapter.\n1…4 Standard mounting on valve housing on\n\f 1 NC\n p\nFunctional Description ÜB…A2: Switches on and locks if the NB…A2: Switches on and locks if the\nSingle-acting pressure limiters in the set pressure value is exceeded. pressure is lower than the set pressure\nsuperpressure range. 2 NO value. 2 NO\nThe pressure limiters work without COM COM\nexternal energy supply. ÜB…A2 switching function NB…A2 switching function\n 3 1 NC 3\nÜB…A2, NB…A2 pressure limiters As pressure rises As pressure falls 1 NC\nThe control unit responds to pressure. 2 NO closes, 1 NC p closes\n 2 NO opens, 1 NC\n p opens\n N\nInterlock is performed when the set ref- Glow lamp ON, locked. Glow lamp ON, locked.\nerence value is exceeded or undershot.\nThe \"Locked\" switching state is indi- 2 NO 2 NO\ncated by a glow lamp. COM COM\nRestart is only possible by activating\nthe reset button on the setting wheel of 3 1 NC 3 1 NC\nthe pressure limiter after the operating\npressure is attained.\n p N p N\n Operating state\n 2 NO\n COM\nSpecifications\n 3 1 NC\nMax. operating pressure NB...A2, ÜB...A2 500 mbar (50 kPa)\n NB 500 A2, ÜB 500 A2 600 mbar (60 kPa)\nPressure connection O ring flange connection on underside of pressure switch: Gas or air p N\nTemperature range Ambient temperature -15 °C to +70 °C\n Medium temperature -15 °C to +70 °C\n Storage temperature -30 °C to +80 °C\nMaterials Housing base : aluminium die casting\n Hood: polycarbonate\n Switch: polycarbonate\n Diaphragms: NBR\n Switching contact: Standard: Ag\n Optional: Ag gold plated (Au),\n Suitable for DDC applications: 24 VDC; 0.02 A\nSwitching voltage Ag contact AC eff. \t\t min. 10 V max. 250 V\n DC \t\t min. 12 V max. 48 V\n Au contact DC\t\t min. 5 V max. 24 V\nNominal current Ag contact AC eff. \t\t 10 A\n Au contact DC \t\t 20 mA\nSwitching current Ag contact AC eff. \t\t min. 20 mA max. 6 A at cos ϕ 1\n AC eff. \t\t min. 24 mA max. 3 A at cos ϕ 0,6\n DC\t\t min. 20 mA max. 1 A\n Au contact DC\t\t min. 5 mA max. 20 mA\nElectrical connection Standard: plug connection for line sockets as per DIN EN\n 175 301-803, 3-pin with protective contact\n Special design: at screw terminals via cable gland, PG11\nDegree of protection IP 54 as per IEC 529 (EN 60529)\nAdjustment In vertical installation position\n NB…A2: when the pressure drops\n ÜB…A2: when the pressure rises\n If the installation position is different, take the switch point change into account.\nSetting tolerance ±15% switching point deviation referred to reference value\nDeviation Permissible deviation of the set value ≤ ± 15 % in the service life test according to EN 1854\n\n\n\n\n 2…4\n\f Dimensions [mm] 72\n\n NB…A2, ÜB...A2\n\n 1\n 43,8\n 2\n\n 3 23\n\n\n 10\n\n\n\n\n 72 53,7 (LK 76)\n\n Reset button\n Typ NB … A2 2 2\n Typ ÜB … A2\nÜB 150 A2 [Ag-G3-V12] •\n Slot for O ring\n 10,5 x 2,25\n\n Pressure connection\n V12 Pressure connection\n Position 12\n V9 Pressure connection9\n Position 9 •\n Through-\n hole for M4\n •\n Electrical connection\n G3 Equipment plug, 3 pin + E\n PG PG11 Plug\n cable connection for\n gland\n line socket as per\n DIN EN 175 301-803\n Contact material\n Ag\n\n\n Setting ranges (mbar) NB ÜB\n Installation position50 α 5 - 50 X X\n 150 30 - 150 X X\n 500…